Borderou de evaluare (job #807661)

Eroare de compilare: main.c: In function 'main': main.c:14:14: error: implicit declaration of function 'strlen' [-Wimplicit-function-declaration] 14 | n = sqrt(strlen(s)); | ^~~~~~ main.c:4:1: note: include '<string.h>' or provide a declaration of 'strlen' 3 | #include<math.h> +++ |+#include <string.h> 4 | char s[100]; main.c:14:14: warning: incompatible implicit declaration of built-in function 'strlen' [-Wbuiltin-declaration-mismatch] 14 | n = sqrt(strlen(s)); | ^~~~~~ main.c:14:14: note: include '<string.h>' or provide a declaration of 'strlen' main.c:21:21: warning: array subscript has type 'char' [-Wchar-subscripts] 21 | v[i] = cod[s[i]]; | ~^~~ main.c:12:5: warning: ignoring return value of 'fscanf' declared with attribute 'warn_unused_result' [-Wunused-result] 12 | fscanf(fin, "%s", s); | ^~~~~~~~~~~~~~~~~~~~